GB1190228A - 5-Chloro-2,3-Pyridine Diol and a Process for its Production - Google Patents
5-Chloro-2,3-Pyridine Diol and a Process for its ProductionInfo
- Publication number
- GB1190228A GB1190228A GB39657/67A GB3965767A GB1190228A GB 1190228 A GB1190228 A GB 1190228A GB 39657/67 A GB39657/67 A GB 39657/67A GB 3965767 A GB3965767 A GB 3965767A GB 1190228 A GB1190228 A GB 1190228A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chloro
- diol
- pyridine
- amount
- chlorine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- AJGLCXBDYCEVIE-UHFFFAOYSA-N 5-chloro-3-hydroxy-1h-pyridin-2-one Chemical compound OC1=CC(Cl)=CN=C1O AJGLCXBDYCEVIE-UHFFFAOYSA-N 0.000 title abstract 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 3
- 229910052801 chlorine Inorganic materials 0.000 abstract 3
- 239000000460 chlorine Substances 0.000 abstract 3
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 abstract 2
- 239000012736 aqueous medium Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/34—Monoazo dyes prepared by diazotising and coupling from other coupling components
- C09B29/36—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds
- C09B29/3604—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom
- C09B29/3617—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a six-membered heterocyclic with only one nitrogen as heteroatom
- C09B29/3621—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a six-membered heterocyclic with only one nitrogen as heteroatom from a pyridine ring
- C09B29/3626—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a six-membered heterocyclic with only one nitrogen as heteroatom from a pyridine ring from a pyridine ring containing one or more hydroxyl groups (or = O)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyridine Compounds (AREA)
Abstract
1,190,228. 5-chloro-2,3-pyridine-diol. J. R. GEIGY A.G. 30 Aug., 1967 [31 Aug., 1966], No. 39657/67. Heading C2C. Novel 5-chloro-2,3-pyridine-diol is prepared by reacting furfural at a temperature of about 0 in an aqueous medium with at least double the molar amount of chlorine or the equivalent amount of a substance or system which releases the said amount of chlorine under the conditions of the reaction, the pH being kept between 0 and 2 during the addition of the first half of the chlorine and between 0 and - 1 during the addition of the second half, reacting the so obtained mixture at a temperature of 30-60 C., and a pH of below 1, with at least an equimolar amount of sulphamic acid, and separating the product.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1263766A CH471782A (en) | 1966-08-31 | 1966-08-31 | Process for the preparation of a new, substituted 2,3-pyridinediol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1190228A true GB1190228A (en) | 1970-04-29 |
Family
ID=4384966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB39657/67A Expired GB1190228A (en) | 1966-08-31 | 1967-08-30 | 5-Chloro-2,3-Pyridine Diol and a Process for its Production |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3471506A (en) |
| CH (1) | CH471782A (en) |
| DK (1) | DK116736B (en) |
| GB (1) | GB1190228A (en) |
| SE (1) | SE343301B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH561757A5 (en) * | 1970-04-23 | 1975-05-15 | Ciba Geigy Ag | |
| US4065254A (en) * | 1972-06-26 | 1977-12-27 | Ciba-Geigy Corporation | Process for dyeing and printing |
| DE3148651A1 (en) * | 1981-12-09 | 1983-07-21 | Henkel Kgaa | "HAIR DYE AGENT, CONTAINING 5-HALO-2,3-PYRIDINDIOLES AS A COUPLING COMPONENT" |
| CN101830845A (en) * | 2010-05-28 | 2010-09-15 | 南京大唐医药科技有限公司 | Synthesis method of 5-chloro-2,3-dihydroxyl pyridine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2583425A (en) * | 1949-12-17 | 1952-01-22 | Standard Oil Dev Co | Fungicidal compositions containing chlorinated isophorone |
-
1966
- 1966-08-31 CH CH1263766A patent/CH471782A/en not_active IP Right Cessation
-
1967
- 1967-08-28 US US663569A patent/US3471506A/en not_active Expired - Lifetime
- 1967-08-30 SE SE12019/67A patent/SE343301B/en unknown
- 1967-08-30 DK DK436567AA patent/DK116736B/en unknown
- 1967-08-30 GB GB39657/67A patent/GB1190228A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1695035A1 (en) | 1971-04-08 |
| SE343301B (en) | 1972-03-06 |
| US3471506A (en) | 1969-10-07 |
| DK116736B (en) | 1970-02-09 |
| CH471782A (en) | 1969-04-30 |
| DE1695035B2 (en) | 1975-10-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |